From: Christoph Müllner <christoph.muell...@vrull.eu> The current implementation triggers an assertion in dwarf2out_frame_debug_cfa_offset() under certain circumstances. The standard code uses REG_FRAME_RELATED_EXPR notes instead of REG_CFA_OFFSET notes when saving registers on the stack. So let's do this as well.
gcc/ChangeLog: * config/riscv/thead.cc (th_mempair_save_regs): Emit REG_FRAME_RELATED_EXPR notes in prologue. Signed-off-by: Christoph Müllner <christoph.muell...@vrull.eu> --- gcc/config/riscv/thead.cc | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/gcc/config/riscv/thead.cc b/gcc/config/riscv/thead.cc index 75203805310..d7e3cf80d9b 100644 --- a/gcc/config/riscv/thead.cc +++ b/gcc/config/riscv/thead.cc @@ -368,8 +368,12 @@ th_mempair_save_regs (rtx operands[4]) rtx set2 = gen_rtx_SET (operands[2], operands[3]); rtx insn = emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, set1, set2))); RTX_FRAME_RELATED_P (insn) = 1; - add_reg_note (insn, REG_CFA_OFFSET, copy_rtx (set1)); - add_reg_note (insn, REG_CFA_OFFSET, copy_rtx (set2)); + + REG_NOTES (insn) = alloc_EXPR_LIST (REG_FRAME_RELATED_EXPR, + copy_rtx (set1), REG_NOTES (insn)); + + REG_NOTES (insn) = alloc_EXPR_LIST (REG_FRAME_RELATED_EXPR, + copy_rtx (set2), REG_NOTES (insn)); } /* Similar like riscv_restore_reg, but restores two registers from memory -- 2.40.1